Proposal and evaluation of an architecture for integrating mobile users in Internet

Mobile IPv4 is the standard protocol for managing the user mobility in the Internet. This protocol provides transparent supp01t of mobile hosts, allows system scalability and doesn't require changes in the fixed portion of the network. Unfortunately, it introduces the so-called triangle routing which is not an optimal one. In this paper we evaluate the impact of the triangle routing on the TCP protocol performances. Our results point out the inefficiencies of Mobile IPv4. For this reason we propose a new architecture named DNS-based as it exploits the Domain Name System (DNS) extended with functionalities for updating the DNS on-line. The DNS-based architecture removes inefficiencies of the triangle routing and keeps the nice properties of the Mobile IPv4 solution, i.e., transparency and scalability.